The 9 Biggest Skin Care Mistakes You're Making

Avoid these common blunders for a clearer complexion.

Even the most well-informed will make simple mistakes that can mess up clear, dewy skin. In fact, most skin care errors are the result of misinformation, not lack of commitment to perfection, says Jennifer Fifer, owner of Tru Skin Clinical Spa in Manhattan. Luckily for us, she pinpoints the biggest blunders that can be easily avoided:

1. You don't read the label.
Do you know what's in your cleanser? Fifer says women often buy high-end exfoliating products and moisturizers, but don't pay attention to what's actually in them. Choose products with the least amount of chemicals, she advises. And avoid those containing SD-40 (or isopropyl alcohol) a common ingredient that can be an irritant for acne-prone and sensitive skin types, leading to redness, dryness, and in some cases, brown spots and premature aging.

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2. You exfoliate too much.
Don't overdo it, says Fifer. Many products today have alpha hydroxy acids to combat wrinkles and fine lines, but if you mix-and-match too often — for example, an acid-based moisturizer in the morning and an exfoliating cream at night — you run the risk of inflaming your skin.

3. You pick at your blemishes.
Hands off, says Fifer. "You'll end up with a bigger problem because you break down the follicle wall, allowing bacteria to spread." Use a sulfur mask to bring down the swelling, she says.

4. You over moisturize.
Surprisingly, women with dry skin should avoid spackling on cream or heavy moisturizers. "It causes more congestion in the long run," says Fifer. "Women would do better to invest in a good humidifier instead, especially if they live in a dry climate."

5. You don't think about your diet.
Consider what you're eating — or not eating — and add some good fat to your diet. "Essential fatty acids, like what you'd get from eating an avocado, help skin glow." And be sure to drink plenty of water. Dehydrated skin can enhance the look of imperfections like wrinkles and scars.

6. You wear the wrong type of sunscreen.
Yes, even in the winter you need to wear an SPF. But, while overexposure to the sun ages skin, many protective products can cause another issue — acne. Fifer suggests looking for sunblock that contains zinc and titanium, which protect without clogging pores.

7. You forget to remove your makeup. A lot.
So you fall asleep with your makeup on, what's the big deal? "Never, never, never!" says Fifer. Even if it's only a rare occurrence, the problems can cascade into your complexion for a week. To avoid a skin care nightmare, be sure to wash your face before you head to bed.

8. You skimp on sleep.
"Skin repairs itself at night," says Fifer. "If you're routinely sleep-deprived, your complexion will show it." Get the beauty sleep you deserve and you'll wake up to better skin.

9. You've been using the same makeup for years.
When was the last time you threw out your makeup or cleaned your brushes? Don't hang on to beauty products if you don't use them frequently. Since your fingers are usually your applicator, bacteria builds up fast in bottles and in makeup sponges, then ends up on your face. As a rule of thumb, Fifer suggests tossing foundation out after six months, though some formulas can last a few years. And don't forget to frequently clean applicator brushes.